The 44-year-old was assigned to the city's 3rd police district, and was working an overtime shift when she was found unresponsive in her patrol car around 9 p.m. on the 1800 block of Christopher Columbus Boulevard, Philadelphia Police Commissioner Danielle Outlaw said.
Responders attempted CPR before rushing Hill to Jefferson Hospital, where she was pronounced dead, Outlaw said.
Hill is married to another "dedicated" PPD officer, according to Outlaw.
A cause of death was not provided.
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